Influence of interfacial rheology on drainage from curved surfaces

被引:62
作者
Bhamla, M. Saad [1 ]
Giacomin, Caroline E. [2 ]
Balemans, Caroline [3 ]
Fuller, Gerald G. [1 ]
机构
[1] Stanford Univ, Dept Chem Engn, Stanford, CA 94305 USA
[2] McGill Univ, Dept Chem Engn, Montreal, PQ, Canada
[3] Eindhoven Univ Technol, Dept Mech Engn, NL-5600 MB Eindhoven, Netherlands
关键词
AIR-WATER-INTERFACE; STRESS RHEOMETER; TEAR FILM; INSOLUBLE SURFACTANTS; DROPLET COALESCENCE; LIQUID-FILMS; SOAP FILMS; MONOLAYERS; STABILITY; VISCOSITY;
D O I
10.1039/c3sm52934g
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Thin lubrication flows accompanying drainage from curved surfaces surround us (e.g., the drainage of the tear film on our eyes). These draining aqueous layers are normally covered with surface-active molecules that render the free surface viscoelastic. The non-Newtonian character of these surfaces fundamentally alters the dynamics of drainage. We show that increased film stability during drainage can occur as a consequence of enhanced surface rheology. Increasing the surfactant layer viscosity decreases the rate of drainage; however, this retarding influence is most pronounced when the insoluble surfactant layer has significant elasticity. We also present a simple theoretical model that offers qualitative support to our experimental findings.
引用
收藏
页码:6917 / 6925
页数:9
相关论文
共 43 条
[1]   Hydrodynamics of droplet coalescence [J].
Aarts, DGAL ;
Lekkerkerker, HNW ;
Guo, H ;
Wegdam, GH ;
Bonn, D .
PHYSICAL REVIEW LETTERS, 2005, 95 (16)
[2]   Droplet coalescence: drainage, film rupture and neck growth in ultralow interfacial tension systems [J].
Aarts, Dirk G. A. L. ;
Lekkerkerker, Henk N. W. .
JOURNAL OF FLUID MECHANICS, 2008, 606 :275-294
[3]  
[Anonymous], 1886, P R SOC LONDON
[4]   EFFECTS OF SURFACE VISCOSITY ON AXISYMMETRIC DRAINAGE OF PLANAR LIQUID-FILMS [J].
BARBER, AD ;
HARTLAND, S .
CANADIAN JOURNAL OF CHEMICAL ENGINEERING, 1976, 54 (04) :279-284
[5]  
Braun RJ, 2003, MATH MED BIOL, V20, P1
[6]   An interfacial stress rheometer to study rheological transitions in monolayers at the air-water interface [J].
Brooks, CF ;
Fuller, GG ;
Frank, CW ;
Robertson, CR .
LANGMUIR, 1999, 15 (07) :2450-2459
[7]   Film drainage and coalescence between deformable drops and bubbles [J].
Chan, Derek Y. C. ;
Klaseboer, Evert ;
Manica, Rogerio .
SOFT MATTER, 2011, 7 (06) :2235-2264
[8]   Role of surfactants on the approaching velocity of two small emulsion drops [J].
Danov, Krassimir D. ;
Stoyanov, Simeon D. ;
Vitanov, Nikolay K. ;
Ivanov, Ivan B. .
JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2012, 368 :342-355
[9]   The life and death of "bare" viscous bubbles [J].
Debregéas, G ;
de Gennes, PG ;
Brochard-Wyart, F .
SCIENCE, 1998, 279 (5357) :1704-1707
[10]   Dynamical deformation of a flat liquid-liquid interface [J].
Dietrich, Nicolas ;
Poncin, Souhila ;
Li, Huai Z. .
EXPERIMENTS IN FLUIDS, 2011, 50 (05) :1293-1303